IGF::OT::IGF MEMBRANE MICROGRAVITY AIR CONDITIONER, MMACTHE CONDENSING HEAT EXCHANGER, CHX, CAN BE CONSIDERED A CRITICAL FUNCTION OF CLOSED LOOP LIFE SUPPORT DUE TO ITS INHERENT ABILITY TO RECLAIM WATER WITHIN THE SYSTEM. A CHX IS ALSO ESSENTIAL TO COOLING CABIN AIR AND REMOVING HUMIDITY TO ENSURE THE ASTRONAUTS CABIN ENVIRONMENT IS MAINTAINED AT A COMFORTABLE LEVEL. IN ORDER TO REMOVE HUMIDITY, COOL THE AIR, AND COLLECT CONDENSATE, THE CHX IS HIGHLY DEPENDENT ON HYDROPHILIC COATINGS AND BIOCIDE COATINGS WHICH MINIMIZE MICROBIAL GROWTH. THESE COATINGS HAVE BEEN USED SINCE THE APOLLO ERA AND HAVE PROVEN THEMSELVES AS ILLEGITIMATE OPTIONS FOR FUTURE DEEP SPACE MISSIONS AND CLOSED LOOP LIFE SUPPORT SYSTEMS DUE TO TWO PRIMARY ISSUES. FRIST, EVEN THOUGH MEASURES ARE TAKEN TO PRESERVE THE COATINGS LIFETIME, THE COATINGS STILL SLOUGH OFF OVER TIME CAUSING THE CHX TO LOSE ITS HYDROPHILICITY WHICH DECREASES ITS EFFICIENCY AND INCREASES ITS SUSCEPTIBILITY OF MICROBIAL GROWTH. AS A RESULT, THE CHX COATINGS MUST BE REGENERATED. AN EXPENSIVE AND TIME CONSUMING PROCESS WHICH REQUIRES THE UNIT TO BE UNINSTALLED AND RETURNED TO EARTH FOR RECONDITIONING. WHILE THIS PROCEDURE IS FUNCTIONAL FOR THE ISS, REGENERATION OF THE CHX CORE WILL NOT BE FEASIBLE ON LONG DURATION, DEEP SPACE MISSIONS. ADDITIONALLY, THE SLOUGHED OFF COATINGS FREQUENTLY BECOME TRAPPED IN THE AIR OR WATER SEPARATOR CAUSING THE SEPARATOR TO BECOME CLOGGED AND INEFFECTIVE FOR REMOVING CONDENSATE FROM THE HEAT EXCHANGER. THE SECOND MAJOR PROBLEM WITH CURRENT CHX TECHNOLOGY IS THE HARMFUL REACTION CAUSED BY THE HYDROPHILIC COATING AND SILOXANES IN THE AIR. THESE SILOXANES REACT WITH THE HYDROPHILIC COATING AND CATALYZE TO FORM DIMETHYLSILANEDIOL, DMSD. DMSDS ARE WATER SOLUBLE AND ARE EASILY DISSOLVED INTO THE CONDENSATE WATER IN THE CHX. ONCE IN THE CONDENSATE, THESE CONTAMINATES ARE VERY DIFFICULT TO REMOVE AND CAUSE SIGNIFICANT DAMAGE TO WATER FILTERS. ON A LONG DURATION MISSION, WATER MUST BE RECLAIMED FROM THE CHX TO ENABLE A FULLY CLOSED LOOP ENVIRONMENTAL CONTROL AND LIFE SUPPORT SYSTEM, ECLSS, AS WELL AS REDUCE LAUNCH UP MASS. WITH THESE DISADVANTAGES IN CURRENT CHX TECHNOLOGY, LONG DURATION SPACEFLIGHT DEMANDS A BETTER SOLUTION. THE PROPOSED MMAC DEVICE MOVES AWAY FROM TRADITIONAL CHX DESIGNS AND REPLACES THE TRADITIONAL CONDENSING SURFACES WITH HYDROPHILIC, NANOPOROUS STAINLESS STEEL TUBES, WHICH DO NOT RELY ON A CHEMICAL COATING TO PRODUCE THEIR HYDROPHILICIY. CONDENSING ON THESE TUBES ALLOWS FOR WATER COLLECTION IN A MICROGRAVITY ENVIRONMENT, UNLIKE GRAVITY BASED AIR CONDITIONER SYSTEMS. ADDITIONALLY, INSTEAD OF USING AN AIR OR WATER SEPARATOR TO COLLECT CONDENSATE AS IS TRADITIONALLY USED IN MICROGRAVITY CHXS, THE MMAC USES A SEPARATE SINGLE PHASE CONDENSATE FLUID LOOP TO COLLECT FLUID. THIS FLUID LOOP FLOWS THROUGH THE INNER DIAMETER OF THE NANOPOROUS TUBES. AS WATER CONDENSES ON THE OUTSIDE OF THE TUBES, LOWER PRESSURE INSIDE THE TUBES CAUSES THE CONDENSATE TO BE DRAWN INTO THE PUMPED FLUID LOOP. WATER CAN THEN BE DRAWN OFF THIS LOOP FOR RECYCLING.